﻿using Grand.Business.Catalog.Services.Tax;
using Grand.Business.Core.Interfaces.Catalog.Directory;
using Grand.Business.Core.Interfaces.Catalog.Tax;
using Grand.Business.Core.Interfaces.Common.Directory;
using Grand.Domain.Catalog;
using Grand.Domain.Common;
using Grand.Domain.Customers;
using Grand.Domain.Tax;
using Grand.Infrastructure;
using Grand.SharedKernel.Extensions;
using Microsoft.Extensions.Logging;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Moq;

namespace Grand.Business.Catalog.Tests.Services.Tax;

[TestClass]
public class TaxServiceTests
{
    private AddressSettings _addressSettings;
    private ICountryService _countryService;
    private CustomerSettings _customerSettings;
    private Mock<IGroupService> _groupServiceMock;
    private Mock<ILogger<TaxService>> _loggerMock;

    private IServiceProvider _serviceProvider;
    private TaxProviderSettings _taxProviderSettings;
    private ITaxService _taxService;
    private TaxSettings _taxSettings;
    private IVatService _vatService;

    private IWorkContextAccessor _workContext;

    [TestInitialize]
    public void TestInitialize()
    {
        var serviceProvider = new Mock<IServiceProvider>();
        serviceProvider.Setup(x => x.GetService(typeof(FixedRateTestTaxProvider)))
            .Returns(new FixedRateTestTaxProvider());
        _serviceProvider = serviceProvider.Object;

        _taxProviderSettings = new TaxProviderSettings {
            ActiveTaxProviderSystemName = "test-provider"
        };

        _taxSettings = new TaxSettings();
        _workContext = null;
        _countryService = new Mock<ICountryService>().Object;
        _customerSettings = new CustomerSettings();
        _addressSettings = new AddressSettings();
        _groupServiceMock = new Mock<IGroupService>();
        _loggerMock = new Mock<ILogger<TaxService>>();
        var providers = new List<ITaxProvider>();
        providers.Add(new FixedRateTestTaxProvider());
        _taxService = new TaxService(_workContext, _groupServiceMock.Object,
            _countryService, providers, _loggerMock.Object,
            _taxSettings, _taxProviderSettings, _customerSettings, _addressSettings);

        _vatService = new VatService(_taxSettings);
    }

    [TestMethod]
    public async Task Can_check_taxExempt_product()
    {
        var product = new Product {
            IsTaxExempt = true
        };
        Assert.IsTrue(await _taxService.IsTaxExempt(product, null));
        product.IsTaxExempt = false;
        Assert.IsFalse(await _taxService.IsTaxExempt(product, null));
    }

    [TestMethod]
    public async Task Can_check_taxExempt_customer()
    {
        var customer = new Customer();
        customer.Groups.Add("group sample id");
        customer.IsTaxExempt = true;
        Assert.IsTrue(await _taxService.IsTaxExempt(null, customer));
        _groupServiceMock.Setup(c => c.GetAllByIds(It.IsAny<string[]>()))
            .Returns(Task.FromResult<IList<CustomerGroup>>(new List<CustomerGroup>()));
        customer.IsTaxExempt = false;
        Assert.IsFalse(await _taxService.IsTaxExempt(null, customer));
    }

    /*
    [TestMethod()]
    public async Task Can_check_taxExempt_customer_in_taxExemptCustomerRole()
    {
        var customer = new Customer();
        customer.IsTaxExempt = false;
        Assert.IsFalse(await _taxService.IsTaxExempt(null, customer));

        var customerRole = new CustomerRole
        {
            TaxExempt = true,
            Active = true
        };
        customer.CustomerRoles.Add(customerRole);
        Assert.IsTrue(await _taxService.IsTaxExempt(null, customer));
        customerRole.TaxExempt = false;
        Assert.IsFalse(await _taxService.IsTaxExempt(null, customer));

        customerRole.Active = false;
        Assert.IsFalse(await _taxService.IsTaxExempt(null, customer));
    }
    */
    [TestMethod]
    public async Task Can_get_productPrice_priceIncludesTax_includingTax_taxable()
    {
        var customer = new Customer();
        var product = new Product();
        _groupServiceMock.Setup(c => c.GetAllByIds(It.IsAny<string[]>()))
            .Returns(Task.FromResult<IList<CustomerGroup>>(new List<CustomerGroup>()));
        var pp = await _taxService.GetProductPrice(product, "0", 1000, true, customer, true);
        var price = pp.productprice;
        Assert.AreEqual(1000, price);
    }

    [TestMethod]
    public async Task Can_get_productPrice_priceIncludesTax_includingTax_non_taxable()
    {
        var customer = new Customer { IsTaxExempt = true }; //not taxable
        var product = new Product();

        Assert.AreEqual(Math.Round(909.0909090, 2),
            (await _taxService.GetProductPrice(product, "0", 1000, true, customer, true)).productprice);
        Assert.AreEqual(1000,
            (await _taxService.GetProductPrice(product, "0", 1000, true, customer, false)).productprice);
        Assert.AreEqual(Math.Round(909.0909090, 2),
            (await _taxService.GetProductPrice(product, "0", 1000, false, customer, true)).productprice);
        Assert.AreEqual(1000,
            (await _taxService.GetProductPrice(product, "0", 1000, false, customer, false)).productprice);
    }

    [TestMethod]
    public async Task Should_assume_valid_VAT_number_if_EuVatAssumeValid_setting_is_true()
    {
        _taxSettings.EuVatAssumeValid = true;
        var vatNumberStatus = (await _vatService.GetVatNumberStatus("GB", "000 0000 00")).status;
        Assert.AreEqual(VatNumberStatus.Valid, vatNumberStatus);
    }

    [TestMethod]
    public async Task GetProductPriceQuickly_NonTaxExemptAndPriceIncludingTax_ShouldReturnTheSameValues()
    {
        var product = new Product {
            IsTaxExempt = false
        };
        var customer = new Customer {
            IsTaxExempt = false
        };

        var taxCategoryId = ""; //as in code
        var scUnitPriceWithoutDiscount = 1000.00;
        var scUnitPrice = 1000.00;
        var scSubTotal = 5000.00;
        var discountAmount = 7000.00;
        _groupServiceMock.Setup(c => c.GetAllByIds(It.IsAny<string[]>()))
            .Returns(Task.FromResult<IList<CustomerGroup>>(new List<CustomerGroup>()));
        //these 6 methods..
        var scUnitPriceInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, true, customer, true)).productprice;
        var scUnitPriceExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, false, customer, true))
            .productprice;
        var scSubTotalInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, true, customer, true)).productprice;
        var scSubTotalExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, false, customer, true)).productprice;
        var discountAmountInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, true, customer, true))
            .productprice;
        var discountAmountExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, false, customer, true))
            .productprice;
        //..should return the same value as this one method's properties are having
        var result02 = await _taxService.GetTaxProductPrice(product, customer, scUnitPrice, scUnitPriceWithoutDiscount,
            1, scSubTotal, discountAmount, true);

        Assert.AreEqual(scUnitPriceInclTax, result02.UnitPriceInclTax, "unit price including tax");
        Assert.AreEqual(scUnitPriceExclTax, result02.UnitPriceExclTax, "unit price excluding tax");
        Assert.AreEqual(scSubTotalInclTax, result02.SubTotalInclTax, "sub total including tax");
        Assert.AreEqual(scSubTotalExclTax, result02.SubTotalExclTax, "sub total excluding tax");
        Assert.AreEqual(discountAmountInclTax, result02.DiscountAmountInclTax, "discount including tax");
        Assert.AreEqual(discountAmountExclTax, result02.DiscountAmountExclTax, "discount excluding tax");
    }

    [TestMethod]
    public async Task GetProductPriceQuickly_NonTaxExemptAndPriceExcludingTax_ShouldReturnTheSameValues()
    {
        var product = new Product {
            TaxCategoryId = "",
            IsTele = false,
            IsTaxExempt = false
        };
        var customer = new Customer {
            IsTaxExempt = false
        };
        var taxCategoryId = ""; //as in code
        _groupServiceMock.Setup(c => c.GetAllByIds(It.IsAny<string[]>()))
            .Returns(Task.FromResult<IList<CustomerGroup>>(new List<CustomerGroup>()));
        var scUnitPriceWithoutDiscount = 1000.00;
        var scUnitPrice = 1000.00;
        var scSubTotal = 5000.00;
        var discountAmount = 7000.00;

        var scUnitPriceInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, true, customer, false))
            .productprice;
        var scUnitPriceExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, false, customer, false))
            .productprice;
        var scSubTotalInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, true, customer, false)).productprice;
        var scSubTotalExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, false, customer, false))
            .productprice;
        var discountAmountInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, true, customer, false))
            .productprice;
        var discountAmountExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, false, customer, false))
            .productprice;

        var result02 = await _taxService.GetTaxProductPrice(product, customer, scUnitPrice, scUnitPriceWithoutDiscount,
            1, scSubTotal, discountAmount, false);

        Assert.AreEqual(scUnitPriceInclTax, result02.UnitPriceInclTax, "unit price including tax");
        Assert.AreEqual(scUnitPriceExclTax, result02.UnitPriceExclTax, "unit price excluding tax");
        Assert.AreEqual(scSubTotalInclTax, result02.SubTotalInclTax, "sub total including tax");
        Assert.AreEqual(scSubTotalExclTax, result02.SubTotalExclTax, "sub total excluding tax");
        Assert.AreEqual(discountAmountInclTax, result02.DiscountAmountInclTax, "discount including tax");
        Assert.AreEqual(discountAmountExclTax, result02.DiscountAmountExclTax, "discount excluding tax");
    }

    [TestMethod]
    public async Task GetProductPriceQuickly_TaxExemptAndPriceIncludingTax_ShouldReturnTheSameValues()
    {
        var product = new Product {
            TaxCategoryId = "57516fc81b0dc92b20fdd2ef",
            IsTele = false,
            IsTaxExempt = true
        };
        var customer = new Customer {
            IsTaxExempt = true
        };
        var taxCategoryId = "";

        var scUnitPriceWithoutDiscount = 1000.00;
        var scUnitPrice = 1000.00;
        var scSubTotal = 5000.00;
        var discountAmount = 7000.00;

        var scUnitPriceInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, true, customer, true)).productprice;
        var scUnitPriceExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, false, customer, true))
            .productprice;
        var scSubTotalInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, true, customer, true)).productprice;
        var scSubTotalExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, false, customer, true)).productprice;
        var discountAmountInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, true, customer, true))
            .productprice;
        var discountAmountExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, false, customer, true))
            .productprice;

        var result02 = await _taxService.GetTaxProductPrice(product, customer, scUnitPrice, scUnitPriceWithoutDiscount,
            1, scSubTotal, discountAmount, true);

        Assert.AreEqual(scUnitPriceInclTax, result02.UnitPriceInclTax, "unit price including tax");
        Assert.AreEqual(scUnitPriceExclTax, result02.UnitPriceExclTax, "unit price excluding tax");
        Assert.AreEqual(scSubTotalInclTax, result02.SubTotalInclTax, "sub total including tax");
        Assert.AreEqual(scSubTotalExclTax, result02.SubTotalExclTax, "sub total excluding tax");
        Assert.AreEqual(discountAmountInclTax, result02.DiscountAmountInclTax, "discount including tax");
        Assert.AreEqual(discountAmountExclTax, result02.DiscountAmountExclTax, "discount excluding tax");
    }

    [TestMethod]
    public async Task GetProductPriceQuickly_TaxExemptAndPriceExcludingTax_ShouldReturnTheSameValues()
    {
        var product = new Product {
            TaxCategoryId = "57516fc81b0dc92b20fdd2ef",
            IsTele = false,
            IsTaxExempt = true
        };
        var customer = new Customer {
            IsTaxExempt = true
        };
        var taxCategoryId = "";

        var scUnitPriceWithoutDiscount = 1000.00;
        var scUnitPrice = 1000.00;
        var scSubTotal = 5000.00;
        var discountAmount = 7000.00;

        var scUnitPriceInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, true, customer, false))
            .productprice;
        var scUnitPriceExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scUnitPrice, false, customer, false))
            .productprice;
        var scSubTotalInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, true, customer, false)).productprice;
        var scSubTotalExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, scSubTotal, false, customer, false))
            .productprice;
        var discountAmountInclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, true, customer, false))
            .productprice;
        var discountAmountExclTax =
            (await _taxService.GetProductPrice(product, taxCategoryId, discountAmount, false, customer, false))
            .productprice;

        var result02 = await _taxService.GetTaxProductPrice(product, customer, scUnitPrice, scUnitPriceWithoutDiscount,
            1, scSubTotal, discountAmount, false);

        Assert.AreEqual(scUnitPriceInclTax, result02.UnitPriceInclTax, "unit price including tax");
        Assert.AreEqual(scUnitPriceExclTax, result02.UnitPriceExclTax, "unit price excluding tax");
        Assert.AreEqual(scSubTotalInclTax, result02.SubTotalInclTax, "sub total including tax");
        Assert.AreEqual(scSubTotalExclTax, result02.SubTotalExclTax, "sub total excluding tax");
        Assert.AreEqual(discountAmountInclTax, result02.DiscountAmountInclTax, "discount including tax");
        Assert.AreEqual(discountAmountExclTax, result02.DiscountAmountExclTax, "discount excluding tax");
    }
}